Bug Description

ruby1.8, ruby1.9, and ruby1.9.1 should set up their binaries using Debian's alternatives system, so I can easily choose which one I want. Ideally, the choices for related binaries (rubygems and irb) would be linked to the choice of ruby.

I am interested in this change because I would like to use ruby 1.9.2 (available as ruby1.9.1) for much of my development work, and I'd like to switch to it on my production servers. Of course, all these systems run on Ubuntu.